| ROUND BODY |
| BN-573H1 - 5 bolt inlet, 2 bolt out w/hanger bolt |
| 1 sensor in manifold, 1 sensor in rear of body |
| BN-573H2 - 5 bolt inlet, 2 bolt out w/hanger bolt |
| 1 sensor |
 |
| Pictured: BN-573H (in front) bolted to BN-581N (in rear) |
| Measurements Required |
| number of bolts inlet; square or off set front flange; with or w/out air; with or w/out sensor; with or w/out manifold; round or oval body |